Damage detection in bridge structures under moving loads with phase trajectory change of multi-type vibration measurements
MetadataShow full item record
Funding and Sponsorship
This paper presents a non-model based damage detection approach for bridge structures under moving loads based on the phase trajectory change of multi-type vibration measurements. A brief theoretical background on the vibration of a simply-supported bridge with a crack under moving load is described. The phase trajectories of multi-type dynamic responses are obtained and a damage index is defined as the separated distance between the trajectories of undamaged and damaged structures to indicate the damage location. Numerical studies on a simply-supported beam structure are conducted to investigate the sensitivity and robustness of the proposed approach to accurately identify the damage location. Experimental studies demonstrate that the proposed approach can be used to successfully identify the shear connection failure in a composite bridge model subjected to moving loads.
Showing items related by title, author, creator and subject.
Hao, Hong; Li, Jun (2017)© 2017 International Society for Structural Health Monitoring of Intelligent Infrastrucure. All rights reserved. Many sources of uncertainties, which could be introduced into the structure during their construction and ...
Bridge condition assessment under moving loads using multi-sensor measurements and vibration phase technologyHao, Hong; Zhang, W.; Li, Jun; Ma, H. (2017)This paper presents a bridge condition assessment approach under moving loads with multi-sensor measurements and vibration phase technology. The phase trajectories of multi-sensor responses are obtained and a damage index ...
Improved damage identification in bridge structures subject to moving loads: Numerical and experimental studiesLi, Jun; Law, S.; Hao, Hong (2013)This paper proposes a damage identification approach in bridge structures under moving vehicular loads without knowledge of the vehicle properties and the time-histories of moving interaction forces. The dynamic response ...